16 June 1993 Elevated temperature operation of laser diodes for pumping
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Proceedings Volume 1865, Diode Pumping of Average-Power Solid State Lasers; (1993) https://doi.org/10.1117/12.146939
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States
Abstract
Elevated temperature operation of pump arrays holds the possibility for utilizing passive cooling of lasers, even in environments with high ambient temperatures. Traditionally, such arrays have used active cooling to maintain junction temperatures near 30 degree(s)C. Although diode junctions operating at elevated temperatures would still require thermostating to maintain the required output wavelength, simpler thermal control systems could be employed. System level weight and power advantages can be realized through the use of such diode arrays. In this paper, elevated temperature operation of laser diode arrays at up to 90 degree(s)C is reported. These arrays were operated at conditions that would yield up to 1300 W/cm2 at the face of a pumping array. In order to address a prime concern in elevated temperature operation, an initial lifetest of these devices is reported. The devices operated for over 350 million shots without catastrophic failure and exhibited a degradation rate of about 4.4% in output power at constant drive current per 100 million shots.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. Stanley Whiteley, "Elevated temperature operation of laser diodes for pumping", Proc. SPIE 1865, Diode Pumping of Average-Power Solid State Lasers, (16 June 1993); doi: 10.1117/12.146939; https://doi.org/10.1117/12.146939
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